I've played GTAIV on PS3 for years. Just went and bought a copy on PC, my computer is fast enough to run it no-problem. Frame rate is almost better than the PS3. I would like help from some sort of modding guru who knows a sure fire way to get it running with the launcher mod installer etc. Have already tried but found nothing but conflicting information on how to do it, as a result the install and getting it to work was a huge failure. Have since removed everything and want to start again. Any help would be cool.

Why would you use a mod launcher? most of the time it wil crash your game cause of a mod install failure! Install mods manually and don't be too lazy to read the included mod readme's. You will see if you are installing the mod manualy you game won't crash most of the time! and the most important when you're modding the game.. MAKE BACKUPS!